Over 120 people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.

The early warnings and alerts from the National Weather Service didn’t indicate a catastrophic flood was on its way.

U.S. President Donald Trump is heading to central Texas on Friday to survey damage from the July 4 flash flood that killed at least 120 people and left dozens more missing. His visit comes amid intense focus on the government response a week after the storm and as thousands of first responders comb through muddy debris,

Officials at the Comfort Volunteer Fire Department triggered a flood warning siren last week when the Guadalupe River began to swell.

In the wake of the deadly flash floods in Texas, state leaders are exploring whether to install more flood warning sirens. Such sirens can save lives if they're part of a larger warning system.

Texas' deadly floods Key questions remain unanswered about the actions Texas officials took both before and during the catastrophic July Fourth holiday floods as a painstaking search for victims continues along the Guadalupe River nearly a week later.

A firefighter appears to have called for emergency alerts at least an hour before the first warnings were received.